Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, khuong tinh
chieu tinh » trieu tinh, lieu tinh, kieu tinh
khanh luan » khanh thuan, doanh luan, hang luan
thi phuong » thi truong
chau tinh » cuu tinh, ha tinh, cua tinh
toan tap » toan ban
van thi » van tai, dan thi, van thu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu tinh) or (chau tinh)) - khanh luan van thi phuong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chau tinh)) - khanh luan van thi phuong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chau tinh)) - khanh luan van thi phuong tinh toan tap*.